Noble agar

Agar-agar, Agar, Gum agar
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Food and Beverages

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General description

Noble agar, also known as agar or agar-agar, is a gelling hydrocolloid extracted from sea weeds such as Gelidium and Gracilaria. It′s structure contains repeating units of D-galactose and 3,6-anhydro-L-galactose, with a few differences, in addition to a low ester sulphate residue. Agarose and agaropectin are the key components of agar. Noble agar is majorly used as both human and animal food supplement. In addition, it is also used in industries for the preparation of solid microbiological media.


Noble agar has been used to make agar gel plates that acts as a standard solid support material:
  • to culture tumor spheroids
  • in lysoplate assay method of Osserman & Lawlor to measure lysozyme concentration in albumen or plasma
  • as BG11 media component to culture Scenedesmus obtusiusculus strains
Originally designed for use in Noble′s cyanide citrate agar.

Preparation Note

Further purified from bacteriological agar with careful specific washings.

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Certificate of Analysis

Certificate of Origin

Effect of restricted preen-gland access on maternal self maintenance and reproductive investment in mallards
Giraudeau M, et al.
PLoS ONE, 5(10), e13555-e13555 (2010)
Agar and agarose biotechnological applications
Armisen R
Hydrobiologia, 157-166 (1991)
Maternal investment of female mallards is influenced by male carotenoid-based coloration
Giraudeau M, et al.
Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character. Royal Society (Great Britain), 278(1706), 781-788 (2010)
Autophagy correlates with the therapeutic responsiveness of malignant pleural mesothelioma in 3D models
Barbone D, et al.
PLoS ONE, 10(8), e0134825-e0134825 (2015)
Characterization of Scenedesmus obtusiusculus AT-UAM for high-energy molecules accumulation: deeper insight into biotechnological potential of strains of the same species
Toledo-Cervantes A, et al.
Biotechnology reports (Amsterdam, Netherlands), 17, 16-23 (2018)

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